Hotels near UCSD

Del Mar Inn
Ask for the reduced UCSD rate. 6 miles north of UCSD. Shuttles will leave from the hotel at 830am to take you to campus. Alternatively, take the MTA 101 bus ($1.75, exact change required) to campus. 

San Diego Marriott La Jolla — 1.5 miles from campus. 

A few more options are in La Jolla, 30 minutes away on the MTA 30 bus ($2.25, exact change required):

La Jolla Beach Travelodge

La Jolla Village Lodge — book via or Expedia. 

Holiday Inn Express and Suites La Jolla

La Jolla Shores (kinda pricey and rooms are not always available consecutively)
8110 Camino Del Oro La Jolla, CA 92037
Ask for UCSD/Physics rate; mention Peggy McCoy for reference